Roll grinding machine



a sneetslshee't 14 Nov. 30 1926.

P. sToNER ROLL; GRINDING MAC-HJQNE Filed Deo. 19, 19:23

Nov. 30 ,'1926.

P. STONER ROLL, GRINDING MACHINE Filed DSC. 19, 1923 T5 Sheets-Sheet 2Patented Nov. 36, 1926.

sra-ra till PAUL STONER, OF WAYNESFORO, PENNSYLVANIA., ASSIG'NGR TOLANDIS TQOL 001V'- 'PANY,' OF WAYNESBORO; PENNSYLVANA, A CORPORATION OFPENNSYLVANIA.

RFQLL GRINDING MACHINE.

' application sie@ recante-'19, 1923. serial No. 661,607.

My said invention relates tok grinding ma` -chine s and it is-an objectthereof to provide a machine which can be made 'of greater` length thanthose hitherto in use.

A further object of the invention, isy to.

provide convenient-'means forioperating the machine to grind convex orconcave surfaces.

Referring to the laccompanying; drawings, Ywhich are made a part hereofand on which similar reference characters indicate y similarv parts,

Figure 1 is anend elevation of my improved maclnne,

, Figure 2, a fragmentary perspective of piece of Work 12. Opposed tothe work sup port is a traversing carriage 13 adapted to be moved bac-lrand forth by theengagement of a rotating spiralgear 14 With a rack 15fixed to the frame ofthe machine. At the rear side of the carriage 13tracks 16 are provided, these tracks supporting a carriage for a motor17 and said carriage being provided 1.vith rollers 18 running on thetracks.

The shaft of the motor 17 has a pulley 19 shown in dotted linesoverwhich a driving belt 2O passes. The belt 2O also passes succcssivelyover a series of pulleys comprising idlers 21 andl 22 and 24. y l

The pulley 24 operates the traversing drive through a train of gearingcomprising a shaft 25 (Fig. 3) on which l.the pulley is mounted` a Worm26 and a Worm gear 27 on a shaft'28. A clutch member integral With anddriving pulleys 23 Worm gear 27 coacts with a clutch-member 29 splinedto shaft 28 for driving the shaft,

" said clutch member beingoperated by-a lever 30 with means at 31coacting with either one of apair of holes 32 in a segment 33 tolock'the lever in place and the clutch member in or out of engagementwith the other `'clutch member. A pair of bevel `gears 34 are mountedloosely yon shaft 28, these.

gears meshing witha bevel gear 35. A slid- ;able slee-ve 36 is splinedon thel shaft 28 and said sleeve has clutch teeth at opposite endsadapted toengage' clutch teeth on one or the other of bevel gears 34. l

- The bevelgear is secured to one end of a vertical shaft -37 and hasintegral there'- With a spur gear 38 meshing ,with a spur gear havingthree coaxial sets of teeth 39, 4Q and 41.` The last named gear issplined to a vertical shaft' 42 andis adapted to be moved up and down onsaid shaft by means of a shifter 43 having arms embracing the shaft atboth ends of the gear and having at its back a series of teethy forminga rack meshv ing with a similar series forming a 'segment rack on onearm of a bent hand lever 4 4 prov vided at its free end with a pin'45adapted -tovengage 1n anyl ne of a series .of three holes 46 in `thesegment :33.

The speed of shaft 42 may be variedaccording to the adjustment of thelever 44 whereby the teeth at 39 maybe caused to engage with those at 38orthe'teeth at 40'may engage teeth at v47 on another gear or the teethat 4l may en-- gage teeth at 48' integral with those at 47, the teeth 47and 48 being formed on a gear splined to the shaft. 37. At its lower endvthe shaft 42Ahas an oblique gear 49 meshing With an oblique gear 50 onan inclined shaft 51 carrying at its other end the oblique gear 14meshing with the teeth of rack 15 for driving the carriage back and'forth ae coi-ding to the position of the sleeve .36;

Y, The controlling means for the carriage rever-sing drive actsthroughsleeve 36 as herecofore statedand comprises means driven throughshaft 42 for moving said sleeve into engagementwith one or the-otherofbevel pinion- 53 on a shaft 54 hearing at its upper end a pinion 55(Fig. 4) having teeth enfrom theshaft by an upper frame portion gears34.v A pinion 52t on shaft 42 drives a 57 having an'elongated stationarysleeve surrounding shaft 42.

A spider 58 is mounted to rotate on a bearing 58 which `is interposedbetween the spider and the frame member 57 concentric with 4shaft 42 andabove-sleeve 56. This' spider carries pins 59 and each pin has journaledthereon a pair of planetary gears 60 l and 6l. The teeth of theplanetary gears 60 and 6l mesh at one side with the teeth of sleeve 56.At the other vside the teeth of gear 6l mesh with a ring of internalgear teeth on an oscillatory actuator 62 'for thev shifter 63 of thereversing clutchsleeve 36,

connection beine' made between the actuator and the shiftertby ring 64fixed to the actui ator such ringhaving teeth at one side meshing with asegment rack 65 on a rock shaft66. AThe rockshaft 66 is journaled at itslower end in a sleeve 67 fixed to .the frame of the machine and theclutch shifting fork4 63 is splined to the lowerend of the rockshaftsaid arm being secured against vertical movement by a flange 68 on thesleeve 67 against they lower side of which the shifter bears while aseparable part 69 of the fork rests on the upper face of the flange andis secured tothe shifter fork byscrews or in any other suitable manner.

The teeth of the planetary gears 60 Vengage -at their outer side with.internal gear 4teeth 0na -dog carrier 70 rotatablyljournaled on abearing of actuator 62 and engaging also a iange of bearing-58 having aspiral track 71 on its periphery.

Dogs 72 on saidtrack are adapted to be ladjlistedthereon about thecarrier and fixed in adjusted position relative thereto. 'A pair ofposts 7 3 are located on a spider secured to the actuator 62 and ring 64said y spider comprismg an external ring 74 and spokes 75 connecting itto the ring 64. The posts 73 are-hollowand serveas spacers to separatethe lowerv spider from the upper spider which "comprisesan outer .ring.7 6 and spokes/77 connected to a hub 7 8.- Inside the posts are bolts79for holding the parts together and one of these bolts serves as asupport for a sliding traveler 80 having a bearing encircling the, boltand extending through `a slot in the bolt. At its other end the travelerhas jaws embracing the edge ofthetrack 7l; Near its lower end the postshown at the left-.hand side of Figure 4 has secured thereto anyinternalabutment bearinga roller 8l and having a downward projection 81" for`manual actuation of theA actuator. A. yieldable detent 82 isforcedoutward bya spring 83 and is held against rotation or overthrow by-a screw y84 hav ing a reduced' end engaging in a slot of the detent; l

Above the upper spider means is provided for driving the` carriage byhand said means f comprising a hand wheel 85 loosely mounted on abearing at the upper end of theframe member 57. The hub of the handwheel has teeth at its upper end adapted to engage with teeth on aclutch member 86 splined tothe shaft 42 and movable up and down on saidshaft. A sleeve 87 concentric with the frame member 57 and preferablyloosely mounted thereon to rest on'dog-'carrier'70 or on thel bearing58. is provided ite upper en d withv an internal recess in which slidesa clutch actuator88 for the clutch member Sti-said clutch actuatorheingin the form of a sleeve havinga relatively thick lov-Jer end anda-thin annular lin at the .npper end engaging the said clutch member.perating means for the clutch actuator -comprises' a lever 89 pivotallymounted onA bracket 93 pivoted at 94 and this bracket has at its forwardenddepe'nding arms on which are rotatably mounted rollers 95'. Therollers 95 bear at their periphery on eccentrically reduced portions 96of a shaft 97 driven by means of worm gearing 98 from a shaft 99. Theshaft 99 has a spur gear`-l00 splined thereto in a manner.to permitlongitudinal movement of the shaft relative to the gear t0 allow for thecross feedl i of the wheel support. At its outer end the shaft 99 issquared to receive a crank by means of which theshaft 97 may be manuallyrotated for adjusting the position of the bracket and the wheel carriedthereby. The

`normal drive for the shaft 99 is through gear 100 and its cooperatingpinion on shaft `101 driven from a shaft l02'by spur gears 103..ihe'sha-ft 102 carries an oblique gear 104 meshing'with oblique teethon a shaft 105 which shaft has secured thereto at its lower end apinion' 106` engaging teeth 10T at .the front side of the rack l5. Aclutch member 108 surrounds the shaft and is operated by a shifter 109movable by means of a hal'id lever 110 (Fig. l).

In theY operation of my device the work revolves in a direction contraryto that of the wheel as usual, the wheel preferably revolving muchfaster than the work. The grinding. wheel carriage reciprocatesy and.the wheel is fedtoward and from the werk all lin the usual manner. Thegear teeth 39, 40 or 4l of the multiple gear may be connected to gear 38or to either one of sets 47 and 4 8 accordingto the speed desired. Theshaft 42 drivenl from the shaft 28 through Nthe. reversing andchange-speed gearing acts through gears52, 53 and 55 to drive the sleeve56. The-actuator 62 being stationary and the sleeve 56 being rotated theplanetary gears 61 will be rotated about their pivots 59 land willtravel about the inner surface. of member 62 carrying with them the'spider 58. As the spider is roengagementv of the rack teeth on ring androck arm 65,` cause the shaft 66 to be4 7 9 until one of the dogs 72strikes the mem? ber whereupon `the post will be pushed in oneAdirection or the other according to the direction of rotation of thedog carrier and will carry with it the actuator 62 by reason of.- .itsrigid connection thereto through rines 64l and 76 and the interveningparts. Roller 81 vwill force detent 82 back until the roller has passedafter which Vthe inertia of the parts and the' force of the spring 83will help to throw the actuator to its opposite position.A 'Thismovement of the actuator -v'vithits rings 64 and 75 about the frame41'nember62 will, by reason ofthe swung so as to move'the sleeve 36 intoengagement with the opposite one of bevel gears 34 to reverse thedirection of carriage traverse. I

Should it be found desirable to move the carriage by hand the lever 89'will be low. ered to permit the clutch member 86 to engage the teethon'` the hand `wheel 85 the lever 44 being set to disconnect'the change'speed gears after which the handwheel will be rotatedtooperate the shaftLi2and thus move the carriage in 'either'direction as desired.

For grinding concave or convex surfaces' on round work- I have -provided'means whereby the wheel may be raised or lowered to vary its distancefrom the work progressively. Said means consists of the eccentric'.

port-ions 96 of the shaft 97 on which the` rollers 95j of the bracket'93are shown torest. The shaft 97 is driven as the carriage reciprocatesbymeans of pinion 106 and stationary ,rack 107 drivingthrough gearing105, 104., 102, 103,101, 100,99 and-98. it will be 'seen that as theshaft 97 rotates the with'the reciprocation of the carriage thus varyingthe'distance betweenthe axes of the work andthe wheel to vary thecontour of the work., If this operation is not desired the clutchshifter 110 is operated to throw outlfthe' clutch'108. whereupon thegearing just mentioned will remain.;stationary'.`

I have provided means whereby the position of the wheel may be 'adjustedto vary the position of the high and low points of the curvegenerated-in Athe operation just described. Such means comprises apointer 111 on shaft 97 projecting outside-the machine frame. A scaleofany conventional or desirable type may be' arranged to coact with thispointer. A' crank is placed on the outer squared end of shaft 99 andthe-clutch 108 being disconnected the, shaft -97 will be turned to raiseor lower the bracket 931er varying the position ofthe curve a'sforinstance when it is desired to change from convex'to concave or viceversa.

It will be obvious to those skilled in the art that many `changes may bemade in the from the spirit of :the invention,l andtherefore I do notlimitmyself to the specific de vice shown in the drawings anddescribedin the specification but. only as indicated in the appended claims..

Having'thus fully described my said invention, what I claim as new anddesire to secure-by .Letters Patent, is:

1. In 'a 'grinding machine, a workholder, l /abrading means and Vmeansfor traversing one of said-parts relatively'to the other including acarriage,.means'for traversing the carriage, traverse reversing means onthe carriage, means also on the carriage for driving an element of .saidtraverse reversing mea-ns and adjustable dogs on the carriagecooperating with said driven element'to pre determinethe length ofcarriage travel, substantially as set forth.

2. In a` grinding machine, a traversing carriage, and means forreversing the-direction of the traverse' comprising arotary memberhaving a s'piraltrack, dogs on the track, and means traveling on thetrack and cooperating with the dogs for reversing the direction oftravehsubstantially as set forth.

3. In a grinding machine, a traversingcarriage, and means for reversingthe direction of the traverse comprising a vrotary member 'having aspiral track, dogs adjustably mounted'on the'track, and means travelingon the track and cooperating with the, dogs .for reversing the directionof travel at `prede termined times, substantially as 'setfortln 4i. In agrinding machine, atraversingcarriage, a rotary spiral dog carrier enthe carriage, and means'cooperating therewith for riage, substantiallyasset forth.

4 y ireversing the direction of travelof-th-e car`- bracket and thegrmdmgwheel carried there-A by will be. slowlyraised and lowered intime`.device of my 'disclosure without departing 5. `In a grinding machine,a traversing carnage, and means for driving the'same coml .i

prising a reversing clutch, an actuator therefor, a pair of shaftsdriven from saidreversing clutch, speed changing gearing'connect-- lngsaid shafts, and means on one-ef said shafts for manuallyoperati U thecarria e, substantially as set forth. nb -g' l 6.111 a grinding machine,a workholder, an. a

abrading device,

a carriage for one offsaid` elements and means for traversing 'sa-idHear..

riage comprising a shaft, meansfor driving said shaftineluding areversible clutch,'fa shifter therefor,

shifter'including a dogfcarrier on the carmeans' for operating thecoiiiprising Ia shaft,

ringev driven'by said shaft, and' connections from the dog-carrier totheshifter, substanj .tially as set forth.

t. In a grinding machine, a Worhholder, an abrading device, a carriagefor oneof said elements, means for traversing said carriage means fordriving said shaft including a reversible clutch, a shifter therefor,means for operating the `shifter in` cluding a dog-carrier ori-.thecarriage driven by saldshaft, and connections fromthe dogcarrier to theshifter said dog-carr1er being concentric with said shaft, substantiallyas and dogs ad] set forth.

8. In a grinding machine,a workholder, an abrading device, a carriagefor one of vsaid elements, means for traversing said carriage comprisinga shaft, means` for driving said' shaft including a4 reversible clutch,a shifter for said clutch, means for 'operating'the shifter including adowcarrier on the carriagc driven by said shaft, connections be tweenthe shifter and the dog-carrier said dog-carrier .being concentric withsaid sha-ft and having a peripheral flange, and -dogs adjustably mountedon said flange, substantially as set forth.` l

9. In a grinding machine, .a Workhold-cr, an abrading device, a carriagefor one of said elements, means for traversing said carriage comprisinga shaft, means for driving said shaft including a reversible clutch,

a shifter for said clutch, means for operate ingl the shifter includinga dog-earner on the carriage driven by said shaft, connec# tions betweenthe shifter andthe dog-carrier sald dog-carrier being concentric withsaid shaft and having a spiral external flange,v

ustably' mounted on said flange,I

` substantiallyv as set forth.

10. In a grinding machine, a Workholder, an abrading device, a carriagefo'r one of said'elements 'and' means 'for traversing said carriagecomprising a shaft, means for driving said' shaft including a reversibleclutch. a shifter for'the clutch, means for operating .the shifterincluding a dog-carrier on the carriage driven by saidvshaft, anactuator. betweenA said dog-carrier and. said shifter, means for holdingsaid actuator in either one of two extreme positions, and dogs on thelcarrie-r adapted to engage and'shift said actuator, substantially as\set forth.'

11. In a grinding machine, a Workholder, an abrading device, a carriagefor ,one of said elements and means for traversing' said .carriagecomprising a shaft', means for driving said 'shaft including areversible clutch,

a shifter therefor, means for operating the shifter including avdog-carrier' on the carriage driven lby said shaft, anI actuator mountedconcentrically with said shaft and dog-carrier, and dogs on the carrieradapted to engage alternately with an abutment on.

the actuator, substantially as set forth.

Lena-a i7 12; In a grinding machine,'a Workholder, an .alorading device,a carriage for' one of said'elements, means for traversing said carriagecomprising a shaft, means for driving said shaft including a reversibleclutch, a

shifter for the clutch, means for operating..

the -sh'ifter including a dog-carrier on the carriage driven by saidshaft, connections between the shifter and the dog-carrier saiddog-carrier beingrconcentric with said shaft -and having a spiralflange, dogs adjustably 'mounted onv said flange, a post on the actuatorparallel to saidvshaft, and an abutment slidablysupported by said postsaid abutmcntbeingconnected toy said flange for movementinto the path ofsaid dogs, substantially as set forth.

v13. In a grinding machine, an abrading device, a ivorliholder, areciprocating carriage for one of, said elements, and means forimparting reciprocating movement to said 'carriage including reversiblepower-'transmitting means, and a rotary controller thereforV onthecarriage, substantially as set forth. i

14. In a grinding machine, an abrading device, a Worlrholder,varcciprocating carriage for one of said elements, and means forimparting reciprocating movement to said carriagcjincluding 'reversiblepower transmitting means, ytraversing 'means for the carriage `includinga controller on the carriage foroperating the reversing means,

'and variable connections between said concarriage for one' of saidmeans, a vertical shaft on *said carriage, reversible driving means forthe shaft, adog-carrier surrounding the shaft,planetarygearingconnecting the shaft and the dogecarrienraN handwheel atthe upper end of the dog-carrier, a clutch member above the handwheel, asleeve Within the hub' of the Wheel adapted to hold saidclutohmemberaway from the Wheel, and a lever having a yokeengaging thesleeve at opposite sides for operating the clutch member, substantiallyas set forth.

17. In agrinding machine, a" rotary Work holder, a rotary grindingWheel, means for traversingone of said parts longitudinally relativelyto the other, a pivoted bracket supportinglone of said rotary parts theaxes of the Worlt holderand the grinding wheel agrinding Wheel, meansfor rotating the,` yWork` and the Wheel oppositely, a traversinglcarriage' for vthe Wheel, and means for movbeing normally in a commonplane with the*` Wheel relatively to the Work holder includ-l ing apinion meshing lwith .teeth on said rack, substantially as set forth. l

19. In a grinding machine,` abrading means, a Workholder, means torotate one of said elements, means for traversing one of said elementsrelatively to the other, and means for moving one element progressivelytoward and from the other 4during a traverse in one direction includinga cam rotating on an axis parallel to that of the rotary element,substantially as set forth.

20. In a grinding machine,`a Wo'rkholder,

ing'one of said elements toward and from the other during a traverse o'the carriage in one direction including a cam rotating on an" axisparallel to those of the vWheel and the .Wo`rk, substantially assetfforth.'

2 1. In a grinding machine, a 'Workholden a grin'dmg Wheel," 'a carriagefor the Wheel,

a bracket on .the carriage supporting the,-

Wheel, Ameans for traversing Vthe carriage in- `cluding arack bar fixedon the machine frame said rack bar having teeth and gearing on thecarriage cooperating there\vitl 1,`

and means for moving vthe bracket progressively toward and'from the workduring a traverse in one direction including a second set Vof `teethlonsaid rack-bar and gearing on the 4carriage cooperating therewith,subs-tantiallyv as :set forth.

. 22. vIn a inding machine,'worlrrotating means, 'an a rading device,means :Borrowiningthe abrading device, means for traversing one of, saidparts relatively 'to the other,

and means for moving one oi' said elements progressively toward and`from the other durlng a traverse in one d1rection including a rack iXedto theimachine frame, and gear" ing connecting said last-named means tosal'd rack, substantially as set forth. f a

23. Ina4 grindingA machine, a grindmg Wheel, Work-rotating means, meansfor rotating the grinding Wheel, means for tra-versing one of said parts'relatively to the other, means for moving one of :said elementsprogressively toward-and from the other during a traverse' in oner'direction :including a rack 4iixed to 'the xna'clnne frame,

gearing connecting said last-named means to said rack, a clutch formingpart of said gearing, and manual'means whereby" said4 clutch may hevdlsconnected, substantially as v set forth." l 2d. In a grindingmachine, a v'vorkholder, an abrading device, a traversing carriage forone of :said elements, a .pivoted bracket on said carriage for.supporting said e ement,

` spaced rollerson said bracket, a shatt underneath said bracket havingeccentric parts on which said rollers are supported, and means forrotating said shaft in timed relation with the traverse of the`carriage, substanl'tially as'set forth.'

25. Ina grinding machine, a vvorkholden an abrading device, a traversingcarriage for one lof said elements, a pivoted bracket on said carriagefor supporting said element, a rack on the maehine'frame, andconnectionsbetweenvsaid rack and the bracket to move the bracket on itspivot during the traversent the carriage, substantially as set forth. f

2 6. In a grinding machine, work-rotating means, a rotary vgrindingWheel, "meansior ltraversing one of said 1p the other, means .for movingone of said elements progressively toward and from the other during a*traverse in one direction including rashaft, means for driving theshaft, and a clutch for stopping and starting the rotation of the shaft.

27. Ina machine., Work-rotating means, `a rotary grinding Wheel, .meansfor traversing one 02E `said parts relatively to the other, means formovin one of said ele-l ments progressively vtovvar and from Vthe otheryduring 'a traverse-in one direction, a

manually-,operated clutch for intermitting.

the last-named movement,' and manuallyoperablel means for setting saidvprogressive means While said clutch is disconnected, substantially asset forth. l Y -28. In a grinding machine, a ,holder for rotating work,a'rotary abrading devi-ce, meansfor' traversing one of said devices artsrelatively A'to :devices bodilytoward and :trom the `ether,

during 'sn-ch traversing movement including -a rotating cam .andconnections for transmitting the'movement of the cam positively to saiddevi-ce, substantially asset forth. 29, Inra grinding machine, aWork-rotating means, a rotary grinding Wheel, means for traversing oneof .said parts'relatively tothe other, means for moving vone of saidelements progressively toward and from'the other during a traverse inone'direction including a driven el-ement, and mea-ns for interruptingvthe drive `for 'said element, substantially as set forth.

3 0. In a grinding machine., a' iixed bed, a i

rack 'on the bed, `a traversing carriage, a gear on the carriage meshmgwith the teeth isstv ofthe rack, a motor on the carriage for drivingsaid gear to traverse the carriage, and traverse reversing means mountedWholly on said carriage ,and deriving its motioning means to" said bedfor' traversing the Vcarriage,and a control on said carriage intergearedWith said connections for adjustably determining the length of travel ofthe carrag'ez substantially as set Aforth.

, 32.- ln a-grindng' machine, a fixed bed, a traversing carriagethereon, driving *means on the carriage, connections from said drivingmeans' to said bed for traversingthe carriage, and means on saidcarriage Afor determining the leneth of travel of the same saidfv meansincluding a pair of adjustable reversing dogs, substantially as setforth.

In -vvitness whereof, li have hereunto set my hand atVilaynesboro,Pennsylvania, this 7th day of Dece1nber,'.`D. nineteenhundred and twenty-three. i .l

Y PAUL STONER.

